line of symmetry
scalene
isosceles
acute-angled
congruent
right-angled
equilateral obtuse-angled
vertex
polygon
A triangle...
• is a closed figure (polygon)
• has three sides• has three
vertexes• has three interior
angles
vertexes
angle
side
Classifying Triangles
acute-angledor
obtuse-angled or
right-angled
triangle
first name middle name last name
Classifying Triangles
equilateralor
isoscelesor
scalene
acute-angledor
obtuse-angled or
right-angled
triangle
first name middle name last name
Give the first, middle and last name for the following triangle:
first name middle name last name
isosceles
isosceles
Right-angledRight-angled
triangletriangle
Give the first, middle and last name for the following triangle:
first name middle name last name
triangletriangleobtuse-angled
obtuse-angled
isosceles
isosceles
Give the first, middle and last name for the following triangle:
first name middle name last name
triangletriangleacute-angledacute-angled
equilateral
equilateral
Give the first, middle and last name for the following triangle:
first name middle name last name
triangletriangleacute-angledacute-angled
scalenescalene
Give the first, middle and last name for the following triangle:
first name middle name last name
triangletriangleRight-angledRight-angled
scalenescalene
Recap: Classifying Triangles
equilateralor
isoscelesor
scalene
acute-angledor
obtuse-angled or
right-angled
triangle
first name middle name last name
Give the first, middle and last name for the following triangle:
first name middle name last name
What is the
measure of < A and
< B
A
B
Give the first, middle and last name for the following triangle:
first name middle name last name
What is the
measure of < A
A
300